Saw-swage



J. F. PRIBNOW.

SAW SWAGE. "APPLICATION FILEDMAY 17.1920.

j UNITED `sTAT.F..s

A,Ifrrnlsl'r OFFICE. I

JOHN r. rRIBNovm'OF INDIANAPOLIS, INDIANA, AssIeNon To E. o. ATKINs & OOM- IANY, OF INDIANAPOLIS, INDIANA, A CORPORATION or INDIANA.

1 sAW-sWAGE.

' Application inea May 17,

T all cl2/vom tmc/.y concern Y Be itknown that I, JOII'N F. PBIBNOW, a citizen of the United States, residing at Indianapolis, in the county ofMarion and State of Indiana, have invented anew and useful Saw-Swage, of which the following is a specification.

It is the object of my invention to make easier the operation of saw swages. In the ordinary saw swage, the force which is jrequired for the swaging voperation produces a great increase in the friction in the relay tively moving-parts vupon one another, 'j so thatthe force to overcome this'friction as well as the force required for the swaging operation proper must be exerted by the operator inworking the device.' Y i According to my present Invention Ijreduce this friction very materially., by providing roller or other anti-friction bearings between thesurfaces which move upon one another, and at the same time modify other features of the swage so that the. swagel bar or die is maintained accurate in its movements and adjustable to various longitudinal positions.

The present invention is in many respects an improvement and development o f the saw swage shown inV mypriorPatent No. 1,284,141, granted November 5, 1918.

The accompanying drawing illustrates my invention: Figurel is a transverse sectional view through a saw swage embodying my invention, being taken in the plane of the swaging die; and Fig. 2 is a section on the line 2-2 of Fig. 1. j Y

y The general construction of the saw swage is similarto that shown in my aforesaid patent. Thereris `a frame 10 which ,is set to one side of the plane of the saw 12 toA be swaged, which frame has guides for coperating'with the saw 'to position the swage. A swage block 2O extending across the plane of the fsaw 12 has a cylindrical end 21, which fits within an annular portion of the frame 10 and is clampable therein in any desired circumferential position, by mecha- Specification of Letters Patent. 'fi Patented June 28 1921 1520. lserial No. 381,998.

a slot 32 to receive the saw being swaged. The anvil 25 and hole 26 are in the plane of this" slot and of the saw, and the. working end of the anvil projects into the slot 32 to abut against thetop of the ysaw tooth being swaged. Two clamping screws V33 and 34 are mounted in the axial ends of theswage block 20, and project into the slot 32 to engage the side faces of the saw at the base of the tooth being swaged to hold the saw 1n position for swaging. The screw 33 is adjustable to any desired' setting, and the screw`34 is, provided with a clamping lever 36 whereby it may be operated quickly Yand conveniently to clamp the saw and release it. The structure so far described is all similartothat shown in my aforesaid patent.

Two` bushings 40 are mounted in alined bushing holes 41 inthe two axial ends of the swage block. 20, and project from the slot 32 outward in opposite directions beyond the end faces of the swageblock to have mounted thereon lthetwo prongs 42 of a blfurcated operatinglever 43, so thatlby they operation of said lever 43 the two bushings 40 are turned correspondingly. That part of Veach bushing 40 which projects beyond the end ofthe swage block is longitudinally split, but-the portion which is locatedl withinthe vhole 41 is not split. Between the outside of the Vlatter'portion .of yeach bushing and the hole 41, both of which` are cylindrical, is .located an annular roller bearing 44. The split .outer end of each bushing 40 has a fiat face 45, to cooperate with a clamping bolt'46 mounted within ,the corresponding prong` 42 of the operating lever 43. Y rIhe clamping bolts v46 are conveniently of the type shown in my prior Patent No.l 1,17 6,985,

granted vli/larch 28, '1916, and are tightened orloosenedto cause Vthe split ends of the bushing 4 04 .to grip or release the swaging die 47 mounted'within said bushing andextending across the slot 42. The swaging die or swage bar 47 is a straight bar of uniform cross-section throughout, and is received in alinedV holes l48 in the bushings, theseholes corresponding to the die in.- shape and size of cross-section and extending longitudinally through the bushings; Thus the die 47 is supported on both sides of the slot. 32, and by loosening the clamping bolts 46 may be adjusted longitudinally within the bushings to bring different portions of the die into working position in the slot 32, but

this clamping action of the split outerends of the bushings 40 to hold the die in proper position d'o'es'notinterfere With the effective` cooperation of the Cylindrical outer surface of the iin-split inner ends of such bushings with the roller bearings 44. In some positions of the swaging die 47 it is clamped at Y only oneend, as it is in the position shown l sive fatigue.

` 3, Asaw swage, comprising aswageblock, alined bushings mounted in holes 1n sald in Fig. l of the drawings; but 4this-is Sufficient, and even in such cases the die is supported in bushings on both sides lof the slot 32-fandis turned'from both sides of such slot by the action of the two prongs 42 and of the two bushingsV 40.

The present vinvention Vis not concerned with the precise shape of the die in cross! section, or With the precise location of the die transversely of the bushings.

Y The operation of the device is in general the same as that of the saW swage shown in my aforesaid Patent No. 1,284,141, save that by reason of the roller bearing mounting of the bushings 40 in the swage block the swaging operation is made materially easier for the operator, and the strain on the parts of the ,swage is reduced.v Because of this,

lthe swage may be'made lighter, with less danger of being broken in use, and the oper Yator can do more Work withless etfort and continue it'for a longer time Withoutexces- I claim as my invention: y

l. A saw swage, comprising a sWage block, alined .bushings mounted in holes in said sWage block, roller bearings between said bushings andthe Walls of said holes, a swaging Adie mounted in said alined bushings, andVmeans for turning .a bushing and throu hf itfturning the swaging die. l,

2. saw swage, comprising a swage block, alined bushings ',inounted in holes in said swage block, roller bearings betweenv said bushings and the Walls of said holes, a swaging die mounted in said alined bushings, and common means for turning both said bushings and through them turning said swaging die.

swage block 'and projecting therefrom, roller bearingsbetween said bushings'a'ndv the walls of said holes,` a Vswaging die mountedin said Vjecting parts for clamping them Vthe projecting ends of said two bushingsthe parts of the bushings in sai'dholes being unsplit and the projecting parts being split, and means coperating with said split proswaging die.

4. A saW swage,oomprising a sWa-ge block,

alined bushings mounted inholes in said sWage jblock, roller bearings between said bushings Vand the walls of said holes, a sWagi'ng-die'mounted in saidalined bushings, said `bushingshavingl split and unonv said.

split portions,.thelunsplit portions copery atingWith said roller bearings, and clamp-4 l ing means cooperating with 1the splitl por-A tionsfor clamping them on the swaging die, and means for turning said Vbushings and through them turning the sWa-ging die.

5. A saw sWage, comprising a swagebloclr,` alined bushings mounted'in holes in said sWage block,jroller bearingsbetween said bushings and the WallsV ofV said holes, a swaging die lrnountedin said alined bushings, the parts Iof said ,bushings copeiu.

ating with said'ioller bearings' being unsplit but al bushing being provided' 'With a s'plit portion, and clamping means 'y col operating with said split portion to clamp the swaging die in place thereiinand means for turning a bushing and through it turning the swaging die.

f 6. A saw swage, comprisingv a swage block, a swaging die rotatably mounted inI `.said swage block, and roller bearings supporting saidV swagingdie in said swag'e block and through which the thrust of said swag ing die is transmitted to -said swageblock.

7. A saw swage, comprising a swagebloclu a swaging die rotatably mounted in said sWage block, roller bearings supportingsaid sW'ag'infr die in said swage block Vand through which the thrust of said Aswaging die is transmitted to'said swage block, 4and abiurcated operating arm the twoprongs of which :co-

operate With said Vswaging diei'on opposite Y JOHN njPRiBNoW.

set my 

